Device for sound amplification, in particular pre-amplifier, amplifier and speaker



FIG. 1 is a perspective view from the top, front and right side of the present design;

FIG. 2 is a perspective view from the top, rear and left side thereof;

FIG. 3 is a front perspective view from the top thereof;

FIG. 4 is front elevational view thereof;

FIG. 5 is rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

The broken lines, which define the bounds of the claimed design, form no part thereof. The broken lines environmental are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a device for sound amplification, in particular pre-amplifier, amplifier and speaker, as shown and described. 